Gaius Cocceius Balbus (fl. 1st century BC) was a Roman politician and military commander who served as suffect consul in 39 BC.
A member of the Plebeian gens Cocceia, Cocceius Balbus was a supporter of Marcus Antonius. He was probably elected as Praetor in 42 BC. In 39 BC, he was appointed suffect consul to replace Lucius Marcius Censorinus.
In around 35 BC, Cocceius Balbus served as either proconsular governor of Macedonia, or as a Legatus in Greece. During his time in Greece, he was acclaimed as Imperator by his troops. He eventually abandoned Marcus Antonius and threw his support behind Octavianus after Antonius divorced Octavia the Younger.
Lucius Marcius Censorinus
|Suffect consul of the Roman Republic
with Alfenus Varus
Appius Claudius Pulcher and Gaius Norbanus Flaccus